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Finding the Third Proportional to 4,423 and 9,517

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Solution

The third proportional to 4,423 and 9,517 is: 20,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,423 : 9,517 = 9,517 : x
  2. Step 2: Convert to fraction form
    4,423/9,517 = 9,517/x
  3. Step 3: Cross multiply
    4,423x = 9,517 × 9,517
  4. Step 4: Simplify right side
    4,423x = 90,573,289
  5. Step 5: Solve for x
    x = 90,573,289/4,423
  6. Step 6: Final answer
    x = 20,477.80

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.